Fig. 7. 



n^.i 



Fig. 8. 



In order to indicate that these curves start from the point ƒ, 

 outside the parentheses the letter ƒ is written. In fig. 7 gf repre- 

 sents tlie solutions of the equilibrium iDi,\)f, fe those of the equili- 

 brium (A.2.2)/ and fh those of the equilibrium [ihi^)f. The small 

 ari'ows indicate the dii'ection in which the temperature increases. 



Also from the point b live curves start; they are: 



1) W. Meyerhoffer. [Zeitsclir. f. phys. Gheni. 3, 3:16 (1889); 5, 97 (1890)] 

 defined the compositions of the solutions of the quadruplecurves. 



J G. G. Vriens. [Zeitsclir. f. phys. Chem. 7, 194 (1891 1] has measured the 

 vapour- tensions of several points of these curves. 



